Monarch Butterfly Pacific Grove California Travel ポストカード

The monarch butterfly (Danaus plexippus) is renowned for its incredible long-distance migration across North America. In autumn, western populations of monarchs travel hundreds to over a thousand kilometers—some from as far as 1,600 km away—to overwinter along the California coast. One of the most celebrated sites is Pacific Grove, often nicknamed “Butterfly Town, U.S.A.,” where these butterflies cluster in eucalyptus, cypress, and pine trees starting around mid‑October and remain until February or early March At Pacific Grove’s Monarch Grove Sanctuary, visitors can witness thousands of orange-and-black monarchs hanging together in dense, chandelier-like clusters—an awe-inspiring sight. These clusters help protect the butterflies from chill and wind. On warmer, sunny days, many will take flight en masse, creating a magical, fluttering spectacle. The sanctuary is maintained by volunteers and supported by local ordinances—visitors must stay on designated paths, avoid touching the butterflies, and keep pets out to ensure minimal disturbance Pacific Grove’s commitment to monarch conservation dates back to the early 1990s when city residents voted to protect overwintering habitat, funding the sanctuary's creation and its ongoing care. However, recent years have seen significant declines in monarch populations—counts that once peaked in the tens of thousands have dropped drastically, with some years witnessing fewer than 1,000 butterflies. Still, Pacific Grove remains a beacon for conservation efforts, education, and public engagement. It highlights both the fragility of this once-vast migration and the crucial role that protected sanctuaries play in preserving its future.